Tweezers.



W. LUXMORE.

TWEEZERS.

APPLICATION mzu AUG. 1-0. 1916.

Patented Feb. 19, 1918 4 d m W m l m 0 a .w a. Z 0. E 5% a 0 m 0 L L/ 7 m w w 6 m MM m a; New m WILLIAM LUXMORE, or CHICAGO, ILLINOIS.

TWEEZERS.

Application filed August 10, 1916.

To all "207mm 2'25 may concern.

Be it known that I, lVILLmM Luxaronn, a citizen of the lhiited States, residing at Chicago, in the county of Cool; and State of Illinois, have invented certain new and useful improvements in Tweezers, of which the following is a full, clear. concise, and exact description. reference being had to the accompanying drawings. forming a part of this specification.

My invention relates to new and useful improvements in tweezers of the class commonly used by dentists, jewelers, etc, and has for its object the provision of a pair of tweezers whereby various irregularly shaped articles may be securely held between opposing ends or article engaging parts of the tweezers.

A further object of the invention is to provide a tweezers which is simple in con struction and which on n be economically manufactured.

Numerous attempts have been made in the past to provide a pair of tweezers having more than two article-engaging parts, but so far as I am aware these devices have been complicated in construction and in most cases were inefiicient in that all irregularly shaped articles could not be securely held between their clamping parts.

By my invention 1 provide three or more arms. one constituting a base arm to which the remaining two or more arms are pivoted. Each one of the arms carries an article engaging end or portion. the said portions being so arranged that different portions of the article are engaged by the tweezers and thus securely held in place.

These and other objects of my invention will be more fully brought out in connection with the accompanying drawings wherein Figure 1 is a side elevational view of the device of my invention:

Fig. 2 is a plan view thereof, and

Fig. 3 is a view of the device in operating condition, holding an irregularly shaped ar ticle such as a crown used in dentistry.

Similar characters of reference refer to similar parts throughout the several views.

Referring to the drawings. l illustrates the base member constructed of sheet metal having one end 5 of considerable width and the other end 6 reduced to form an arm of the tweezers. The outer end of the arm extends upwardly as illustrated at 7 to form an article engaging end or portion. 8 and 9 illustrate two arms which are rotatably Specification of Letters Patent.

Patented Feb. 19, 1918.

Serial No. 114,100.

mounted upon the base member a by means of the common pivot 10. The pivot 10 as shown is disposed intermediate of the ends of the lever arms 8 and 9, thereby providing the finger pieces 11v and 12 of the arms 8 and 9 respectively. The outer end of the arm 8 contains the article-engaging end or portion 13 disposed above or adjacent the end 7 of the base member 4. Similarly the arm 9 is provided with the article engaging end or portion 14, preferably serrated as illustrated at 15 to prevent slipping between the end of the arms 9 and the article when it is clamped between the arms oft-he tweezers. It is desirable to have the article engaging portions 7, 13 and let of the base member 1 and lever arms 8 and 9 respectively in vertical alinement with one another, and to provide such alinement the arm 8 is bent in wardly at 16 and the arm 9 similarly bent inwardly at 17 to a point directly above the article-engaging portion 7 of the base member. The lever arms 8 and 9 are arranged to have independent rotation upon the pivot 1.0, so that the article engaging end of one of the arms may be moved upwardly or downwardly entirely independently of the article engaging end of the other arm.

As most clearly illustrated in Fig. 2, the arms 8 and 9 are pivoted to the base memher 4; on opposite sides thereof. To normally hold the arms 8 and 9 in the position illustrated in Fig. 1, I provide a spring member 18 which straddles the base member and fits into a slot 19 contained therein. The outer ends of the spring 18 rest against the underside of the finger pieces 11 and 12 of the lever arms 8 and 9. Two lugs 20 and 21 are stamped out of the base member 4: and are arranged to support the underside of the spring, the log 20 extending outwardly from one side of the base member and the lug 21 outwardly from the other side of the base member. It will thus be seen that tension is placed upon the levers 8 and 9 tending to rotate the same in a counter-clockwise direction (Fig. 1). To limit the counter-clockwise movement of the lever arms stops are provided at 22 and 28 stamped from the base member 1 and against which the lever arms 8 and 9 rest when assuming the position illustrated in Fig. 1.

To hold the device in an uprightposition when placedupon a bench or table the two wings 24 and 24; are stamped from the base member at, one extending outwardly from one side thereof and the other from the other side of the base member, thus providing a support whereby the device may be held upright and easily picked up by the workman.

Fig. 3 illustrates a crown band and swaged cusp to be soldered thereto at 25 held between the article en aging portions 7, 13 and 14 of the tweezers. On account of the independent pivotal mountings of the arms 8 and 9 and of the relative positions of the article engaging portions 13 and 14: of such arms it is possible to clamp different portions of the irregular denture 25, as illustrated in Fig. 3.

Although I have described and illustrated the tweezers as being provided with three arms or three article engaging portions, it will be apparent that more arms may be provided if desired, so that more portions of the irregularly shaped article may be engaged.

lVhat I claim as new and desire to secure by Letters Patent of the United States, is:

l. A pair of tweezers comprisin a base member constituting one off the jaws of the tweezers, a pair of arms constituting two jaw members pivoted to the base member by means of a common pivot, said base member and arms being constructed of sheet metal and being relatively movable in par allel planes, and a spring acting between the base member and the arms tending to move the said two jaw members toward the first mentioned jaw, all of the jaw members cooperating to form a single clamping means.

2. A pair of tweezers comprising a base member constituting one of the jaws of the tweezers, a pair of arms constituting two jaw members pivoted to the base member, one on each side thereof, by means of a common pivot, said base member and arms being constructed of sheet metal and being relatively movable in parallel planes, a-

finger piece provided on each of the jaw members on the side of the pivot opposite the jaws, and a bent spring member having its ends located on opposite sides of the base member and acting against the undersides of the finger pieces tending to move the said two jaw members toward the first mentioned jaw to hold an article in place, all of the jaw members cooperating to form a single cl amping means.

In witness whereof, I hereunto subscribe my name this 5th day of August, A. D. 1916.

WILLIAM LUXMORE. Witnesses:

ROBERT F. BRACKE, MABEL CAVE.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, I). 0." 

